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Alternating Voltage AC Testing
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Test Transformer Systems
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YDTW \ YDTCW series
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[ Cylinder type Transformer Systems ]
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Conventional AC test transformers are especially designed for testing objects of medium capacitance. These systems are particularly suited for tests requiring stable voltage even if the load changes under voltage (corona, wet & pollution tests) or when the load is inductive (inductive voltage transformers).
The possibility of stacking several of these transformer modules allows reaching very high voltage levels by keeping reasonable floor space.

Up to 1800KV
Up to 9MVA
Up to 30A
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YDTW-YDTCW series .pdf (664KB) Transformer Field Test.wmv (1.28M)
SGM series
[Resonant Test Systems]
 

Resonant Test Systems, type SGM is applied for the generation of a continuously variable alternating (AC) voltage of a fixed frequency (mainly 50 or 60 Hz) for high-voltage (HV) routine, type and development testing of capacitive test objects. They can also be applied for HV on-site tests, but SAMGOR offers for that application the more economic solution of frequency-tuned resonant test systems.

Capacitive test objects are cables, capacitors, but also large rotating machines, instrument and power transformers (for applied voltage tests). Resonant test systems enable not only HVAC tests at 50/60Hz, but also at higher or lower frequency (20-300Hz) and dynamic tests with fast voltage changes (e.g. for capacitors). Because of their precise sine-wave, resonant test systems are very well suited for the combinations of HVAC withstand tests and partial discharge (PD) measurement.

Tunable Frequency Type:
Frequency 20-300Hz
Up to 1200KV
Up to 12MVA

Tunable Inductance Type:
Frequency 50Hz/60Hz
Up to 1600KV
Up to 30MVA

SGM series .pdf (237KB)

Specialized customization

YDSW series
[Gas insulated Transformer Systems]

SF6 insulated test transformers are designed for testing metal-clad switchgear (GIS) and substation equipment. The conventional transformer can be flanged directly to the GIS. This makes testing of such installations possible without feeding them trough an air-SF6 bushing.

Therefore the merits of the encapsulation remains effective also during the test which is essential for PD tests. It is also a portable and easy maintenance solution to instead of the Oil Filled cylinder type transformer system and AC resonant test system.

Up to 800kV
Up to 4A
PD<2pC
YDSW series .pdf (149KB)
Coupling Capacitors
TAWF series & LBH series

[ Coupling Capacitors & Filter ]

TAWF series coupling capacitors are used as resonant system base load, separation of PD signals from the high voltage, measuring AC voltages and attenuating interferences from HV side (TAWF type with additional filtering inductance).

TAWF series .pdf (264KB)
Controls
AC-2000
[AC System PC Controls]
This Industrial PC based control system is specifically designed for the needs of HV AC testing. The system is running a Windows based operating software package. Active and passive safety is implemented into the system as independent external emergency switches, software watchdogs, graphic symbols and status information for fast understanding. A protocol file can be used for a further calculation.
ACA-2000.pdf (188KB)
Others
SG3005
[Digital AC/DC Measuring System]

SG3005 Digital AC/DC Measuring System is a microprocessor controlled device for accuracy measuring AC, DC and also can be used for testing voltage waveform distortion and ripple factor.

The SG3005 has implemented a flash detector which stores and shows the last voltage measurement and its polarity before a breakdown or flashover occurs.

The instrument is specially designed for use in high voltage laboratories where a high degree of accuracy is necessary.
SG3005.pdf (232KB)

Please fill your request in questionnaire  > Alternating Voltage AC Testing and kindly send it to > info@samgor.com
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